七段制恒工具面角三维水平井轨道设计方法  

Design method of seven-section well-path with constant tool face angle for three-dimensional horizontal well

作　　者：唐雪平 洪迪峰 高文凯 彭烈新 杨宝斌 Tang Xueping;Hong Difeng;Gao Wenkai;Peng Liexin;Yang Baobin(CNPC Engineering Technology R&D Company Limited,Beijing 102206,China;PERA Technology Corporation Limited,Beijing 100020,China;The Fourth Drilling Branch,CNPC Bohai Drilling Engineering Co.,Ltd.,Hebei Hejian 101916,China)

机构地区：[1]中国石油集团工程技术研究院有限公司,北京102206 [2]安世亚太科技股份有限公司,北京100020 [3]中国石油集团渤海钻探工程有限公司第四钻井分公司,河北河间101916

出　　处：《石油学报》2022年第9期1315-1324,共10页Acta Petrolei Sinica

基　　金：国家重点研发计划项目(2019YFA0708302)资助。

摘　　要：为降低页岩油气田三维水平井的施工难度,提出了七段制恒工具面角轨道设计模型。根据工程设计需求,将设计参数归为3类18种求解组合。由于参数约束方程为多元非线性方程组,难以解析求解,为此探索了数值求解方法。首先求解对应的三维圆弧轨道模型,将其结果作为恒工具面角轨道模型的初值,进而采用拟牛顿法进行求解。基于三维圆弧轨道模型及其解析公式,设计了恒工具面角轨道模型常用求解组合算法流程,解决了三维恒工具面角设计模型求解难题。算例研究表明,模型求解方法简单、有效,计算精度高,易于编程实现,可以为三维水平井轨道设计以及页岩油气田三维丛式水平井优快钻井提供新选择以及相应的技术支持。To reduce the operation difficulties of three-dimensional horizontal wells in shale oil and gas fields,this paper proposes a design model of the seven-section well-path with constant tool face angle.According to the engineering design requirements,the design parameters are grouped into 3 categories and 18 parameter combinations.Since the parameter constraint equations are multivariate nonlinear systems of equations,which are difficult to be solved analytically,numerical solution methods are explored for this purpose.Firstly,the corresponding three-dimensional circular arc well-path model is solved,and the result is used as the initial value for the model of well-path with constant tool face angle,and then the model is solved using the quasi-Newton method.Based on the three-dimensional circular arc well-path model and its analytical formula,an algorithm flow has been designed for the common parameter combination of the model of well-path with constant tool face angle,and the difficulty in solving the three-dimensional constant tool face angle design model is finally solved.The case study shows that the solution method is simple and effective,characterized with high computational accuracy and easy implementation of programming,which provides options and technical support for three-dimensional horizontal well-path design and the optimal and fast drilling of three-dimensional horizontal cluster wells in shale oil and gas fields.

关 键 词：水平井 三维轨道 恒工具面角 数值模型 设计方法 

分 类 号：TE243[石油与天然气工程—油气井工程]